If you had an aqueous mixture that contained Ca?*, Ba?, and Al3+ cations, how many different solids could precipitate if a sulfate solution was added? 9. 1 3. 2 - 3 3.4 none Which of the following represents the synthesis of nitrogen monoxide(g) from nitrogen gas and oxygen gas, an endothermic process? 2. N2(g) + O2(g) + heat 2 NO(g) 9. N2(g) + O2(g) 2 NO(g) + heat :: 2N2(g) + O2(g) + heat 2 N2O(g) d. 2 NO(g) + heat N2(g) + O2(g) + The molar mass of CHO is